Their original appeal was knocked back by UEFA last week and subsequently took their case to the Swiss-based court, prior to the Scottish champions' scheduled clash with Maribor on Wednesday night.

However, CAS have denied the appeal and confirmed Celtic will play in Slovenia, while Legia will travel to Kazakhstan to face Aktobe in the Europa League.

A statement read: "Legia Warszawa filed an appeal to the CAS at 17:30 on 15 August 2014 together with an urgent application for provisional measures requesting that it be provisionally admitted to participate in UEFA Champions League matches until the CAS renders its final arbitral award.

"The appeal is directed against UEFA and Celtic FC which were invited to comment on the Polish club's request until 13:00 (Swiss time) today.

"The President of the CAS Appeals Arbitration Division considered the parties' written submissions and has denied Legia Warszawa's request. Accordingly, Celtic FC remains qualified to participate in the UEFA Champion's League 2014/2015 and will play its next match against NK Maribor on 20 August 2014."